Adding apparatus.



2 SHEETS-SHEET 1.

Patented Mar. 25, 1913.

M. KLAGZKO. ADDING APPARATUS.

APPLICATION FILED MAY 4, 1912A l l I l l l l l .1. n

Witwe; sa; r

M. KLACZKO.

ADDING APPARATUS.

APPLIoA'rIoN FILED un 4, 1912.

1,056,912. Patented MarQ25,1913.

2 SHEETS-SHEET 2.

s the present invention.

4 Max xLAczKo, or mamita, GERMANY.

ADPING: ARPARATUs.

pecigatien of Letters Patent.

Patent-ed Mar. 25, 1913.

Applicatiouled )gay 4 ,v 1912. Serial No. 695,082.

To all fte/5.032921 may concern Re it lniewn, that I, .4X ISLACZKQ, e. Sul?- eft et the Entrer et .esem and rendent of 4t Bereiten-tenesse Berlin, .fermento have invented a new and useful Addlrta Arplrates, 0f whh the following is e Specifi- @tltlmf Y This intenten reit S. te adding apparatus of the type in vwhich the fitsaif indicated on bare slldable longitudina ly in oth directions between suit-able'guides, the sllding ittoement in one direction corresponding to the lie-Heel. digit wl the movement tutti@ thel direction to the complement of the gllhe ohject of the presen-t invention is to Siiuplit und improve the construction. of. are fi dine anagrams and were pathwlarly te Prende' improved. means whereby the 'particular direction in which the bars,A

w .en 111. an fee Pesi. iet-11S @nld be moved, is readily ih iatd to' the iper tor, at the Same time failitating the-use Q. the apneratus and providing ready means for limit ing the moi/enten lniparted to the hars.

In order that t e invention may be more clearly understoo referenceismade to the accoinpanying'dravvin s which show by way of example two meth s of carrying out tlm invention.

Figure l is a transverse section on the line A l5 of Fig. willich illustra-tes lan,

with part of the upper cover remove an adding apparatus cohstructed according to Fig. 3 is a longitudinal section on the line C-D ,ot Fig. Zr Figs. Il, and G are views corresponding tol 1ifigs. i, i! and 3,' showing a Slight niodlfication of the. adding. apparatus.

Th? apparatus comprises u box a having a depression l; in its cover and Slots r: in Said depression. Slidable through said slots is a corresponding series qt' angular bars d, whose vertical webs are guided within the. slots u and the horizontal webs di of the bars are guided hetween the depression b in the box a and rollers or uide bars e.

The horizontal webs d2 of t e Aangular 'bars 1l carry the indicating digits f which are adapted to individually appear ,beneath sight apertures g in the depressaon b ofthe box.

The vertical webs d o f the slidable bars a e provided with two sets of 'satt-teeth h afd/f'. of a pitch equal to, the distance between, the numerals f on the horizontal webs ali'. The setrof teeth zT at one end is directed in the opposite direction to the set of teeth h at the other end of the slidable bar cpl, as may be readily seen in Fig. 3.. The upper side of the depression is provided with .nu-

merals fr corresponding to the numerals on the Yslidable bars, as seen in Fig. 2, the nuixnerals 7c servingy for the purpose of indicating the position to which the teeth h i of the slidable bars a' are to be set. The upper cover of the box a at each end of the depression b is provided with inclined surfaces Z m which are inclined at an angle corres onding to the inclination of the teeth 'It an e' respectively, so that when the operatei` places his finger between one of the teeth on the bars d and moves the bar in the one direction or the other, this movement of the nger is liniited by thel inclined surfaces Z m.

The direction of the teeth It and i indicates to the operator the direction in which the bar d is to be moved and at the same time facilitates the operation of the sliding har. Ilf for example the numeral 6 is to be set in the machine', the toothl It which is in llne with the numeral 6 of the setting numerals le, is engaged by the'nger of the operator and as the tooth is downwardly directed with reference to Fig. 3, the slide har (l will he moved downwardly unt-il the linger of the operator contacts with the inclined surface m. of the depression b, where` upon the numeral 6 of the numerals f carried by the slide bar, will be visible through Y the sight aperture g in the de ression Ab.

If n ow the number G is to be a ded to the last (l, the tooth which is n'ow opposite the setting numeral 6 of the setting numerals k,

which in this case would be the tooth i', is

in like manner engaged by the finger of the operator und as this tooth is direct-ed upwardly with reference to Fig. 3, the slide bar (I must be moved upwardly, until the finger of the operator contacts with theA inclined surface l whereupon the indicating numeral Q of the indicating numerals f will appear beneath the aperture g. The ten must then be carried forward to the next slide bar d by moving the next slide bar b one place in a manner similar to that already' described, so that the resultant 12 will appear beneath the aperture g.

The resettin device comprises 'a` rod n slidable. throng suitable lugs 0 on the bottom of the box a against the action of a.

the latter. l, IG

In the apparatus illustrated in .Figs. 1 to' 3 the apertures g beneath which the numerals f are adapted to appear, are arranged at the `lower end'of the depression b, but in certain cases this arrangement is undesirable owing to they fact that the finger of the operator covers the aperture g and is also likely to work dust and dirt into the aperture g in the course of time. To obviate the .'*foregoing disadvantage the apertures g may be arranged midway of the depression b, as illustrated in Figs.4, 5 and 6. In this case the indicating numerals f are so arranged on the horizontal webs L2 of. the slide bars d that the digit o normally appears beneath the aperture g while the remaining digitsy are arranged in consecutive order in the rear thereof. If the numeral 4 is t-obe set for example in the machine according to Figs. 4-6, the fourth tooth it? of the teeth his engaged by the finger-.of the operatore-nd the slide bar d thereupon 'moved downwardly in the manner hereinbefore de-' scribed, so that. the numeral 4 of the indieating numerals f willvappear beneath the apertures g.

In the arrangement illustratedin Figs. 4, 5 and 0 the provision of setting numerals may be dispensed with, as there is no dithculty in ascertaining-the respective tooth' projecting above thedepression b, Whichjs l lo be uianij'inlated, as theo er-ator can read# ily calculate either upward y or downwardly. from the apertures g, there being four teeth above the aperture g and four teeth below the aperture g in each case, the'lower four teeth corresj'ionding to the' numerals 1 to 4,- respectively, and the upper four teeth to the numerals to 9 respectively, while the tooth in' line with the aperture g corresponds to the numeral :3. y ""ly the arrangement illust-rated in Figs. 4,' 5 and li the apertures g are left clear to View while the numbers maywith greater facility lie read ofi' owing to the result being ari-unged in the middle of. the apparatus and constantly uncovered, inasmuch as the fingers at the end of the setting movement rest against eiuer the incline Z or incline m. Moreover hy arranging the apertures gin. the middle of the apparatus, less possibility occurs of the fingers being passed over said apertures and thus causing dirt to enter thesame.r which may be the case` in the appa ratus usruled in Figs. l to 3. .Moreover 1 rangement it 1s unnecessary to providean additipnal series of setting numerals le on the ripper side of the depression b, vas in'Fig. l,`ll'iwiiig to the facility with which the teeth above and below the apertures g can be overlooked. By dispensing with the setting numerals I: the results can also bev 'much more easily read otf and the apparatus manipulated. The apparatus may also be narrowed in width, as it is unnecessary to 'space the slots c in the depression b lso wide employedf .It will of course be understood that, if desired, the slide-bars nl can be connected to .suitable gear wheels drivin any known type ofadding mechanism with or without mechanism for carrying .forward apartfas when the, settlng Inimeralsl care the tens, hundreds and so on, and if desired,

a printing inechanismmay alsol be provided.

I claim 1. In a calculating machine comprising a box having a depression in the top thereof and longitudinal slots and-a transverse series of openings in said depression, and bars mounted to slide in said box and project through said slots, said bars4 each. bearing the cipher and digits in numerical order adapted to be individually visible through Said openings, each of said bars having two sets of teeth projecting upwardly `through said slots, the teeth of one of said sets beingA directed in the opposite direction to the teeth'of the other set whereby said teeth af- 'ford an indication of t-he direction in )which said bars are to be'slidably moved..

2. A caculating machine comprising a box having transverse linclined finger guides and a depression between them, Aa series of.

longitudinal slots and a transverse series of openings in said depre ion, bars mounted to slide in said box an `project through said slots, said bars each bearing the cipher and digitsin numerical order adapted to be individually visible through said openings, and a 'series of teeth lprojecting upwardly from each of 4saidb-ars through said Slots,

'one half-of each series of teeth being directed toward, and inclined at .the saine angle as, one of said finger guides and the other half of each series of teeth being Adirected toward andinclined at the same angle as, the other finger guide, whereby said teeth' afford an indication of the direction in which said bars are to he slidably moved.

the direction in which said bars are to be slidably moved.

4. A calculating machine comprising a box having a depression in the top thereof and longitudinal slots and a transverse series of openings in said depression, bars mounted to slide in said box and project through said slots, said bars each bearing the cipher and digits in numerical order adapted to be individually visible through said o m'ngs, each of said bars having two sets ol teeth projecting upwardly through said slots, the teeth of one of said sets being directed in the opposite direction to the teeth of the other set whereby said teeth afford an indication of the direction in which said bars aregto be slidably moved, a springpressed transverse returning bar in said box and means foraactuating said returning bar from the exterior of said box.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

MAX KLACZKO.

Witnesses VAMANCE HlLL, MARY STRASDE. 

